Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc day
y lang » o lang, _ lang, tay lang
ve nam » he nam, va nam, le nam
vi cua » vai cua
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y lang xa hoi. hieu ve nam ((thuc va) OR (thuc dan)) hanh ((vi cua) or (di cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu ve nam ((thuc va) OR (thuc dan)) hanh ((vi cua) OR (di cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang xa hoi. hieu ve nam ((thuc va) OR (thuc dan)) hanh ((vi cua) or (di cua)) tu".
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu ve nam ((thuc va) OR (thuc dan)) hanh ((vi cua) or (di cua)) tu*.